Abstract

LUSI, A. R. et al. EVALUATION OF THE HELIOSAT-4 AND MCCLEAR MODELS FOR SOLAR GLOBAL IRRADIATION ESTIMATE AT TWO SITES IN ARGENTINA. An. AFA [online]. 2023, vol.34, n.3, pp.5-5. ISSN 0327-358X.  http://dx.doi.org/10.31527/analesafa.2023.34.3.76.

Satellite-derived solar radiation information is necessary for assessing the financial risk of solar energy projects at ar-bitrary locations. These estimates must be evaluated against high-quality ground measurements to ensure the reliability of the information. In this work, 15-minute Global Horizontal Irradiance (GHI) data from the Heliosat-4 model for all-sky conditions and the McClear model for clear-sky conditions were evaluated against ground-based measurements at two Saver-Net stations (http: //www.savernetsatreps.org): Pilar (Córdoba) and Villa Martelli (Buenos Aires). Clear sky detection of the measurements was done using the modified clarity index and analysing the variability of consecutive measurements. A bias close to -5.5% was found for the Heliosat-4 model at both sites and 1.15% and -0.73% for the McClear model in Pilar and Villa Martelli, respectively. Furthermore, the relative root mean square error (rRMSD) was 2 % and 20 % for the McClear and Heliosat-4 models, respectively at both sites.

Keywords : GHI; CAMS; Solar radiation; Saver Net network.

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